If a pharmacist adds 3g of hydrocortisone (HC) to 60 g of a 5% (w/w) hydrocortisone  cream, what is the final percentage strength of hydrocortisone in the product. Hint: identify first the amount of HC present in 60 grams then add the 3 grams to both the amount of solute and solution then compute for the new percentage.   Answer has 2 decimal places

Q: Describe the preparation of a 250 mL of 5 M aqueous HCl solution from a 35% (v/v) concentrated…

A: Given: Concentration of final solution = 5 M Volume of final solution = 250 mL = 0.250 L…

Q: Common aspirin is acetylsalicylic acid, which has the structure shown below and a pKapKa of 3.5.…

A: Given data : Mass of Aspirin = 670 mg water = 10 ounces pKa of Aspirin = 3.5 Molar mass of Aspirin =…

Q: Fifty milliliters of dextrose 70 % (w/v) is mixed with 250 mL of purified water. What is the final…

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Q: One needs to make 2 L of a 0.15M solution of NaOH, starting with a 10%(w/v) solution of NaOH. The…

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Q: Of the given compounds, which is more soluble in water? Lö: H2C- H-Ć- CH2 H2 || O both are equally…

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Q: Answer the questions for the graph given below. 100 90 80 NaNO 70 60 CaCl 50 Pb(NO)2 40 NaCl ity (g…

A: The given graph is of solubility v(s) temperature.

Q: 2furoic adid isa white solid that follows this usual pattern as, 1 gram of 24uroic acid disolves in…

A: The experiment is based on the recrystallization of 2-furoic acid.

Q: How many grams of ammonium chloride (NH4Cl) are there in 575 mL of a 0.400% (m/v) solution of NH4Cl?

A: Given: Volume of solution = 575 mL Percentage composition of solution = 0.400%(m/v)

Q: What willl be the Molar concertration of the 333.85  HCl solution prepared from 4 mL of concentrated…

A: Volume of HCl solution = 333.85 ml  Can consider unit in ml to solve this problem. Volume of…

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Q: If you have 155 mL solution of a 0.762M FeCl, solution, how many moles of FeCla are contained in…

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Q: Calculate the % (m/V) of 156 mL solution containing 18.2 g sodium chloride.

A: Given mass of solute = 18.2 g volume of solution = 156 ml

Q: 3. There is a weak organic acid called phenol (C6H6O, molar mass = 94.11) which was once used as an…

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Q: Ex1: Calculate the molar concentration of HNO, (63.0 g/mol) in a solution that has a specific…

A: Molar concentration is a widely used concentration method. It has units of mol/liter. It is defined…

Q: 210 mL of 2.1% (m/v) HCl from 13 % (m/v) HCl

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Q: Complete the following table. and then Circle the compound that is most soluble in water; cross out…

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Q: (w/w)

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Q: An aqueous solution of acetone is made by transfering 3.18 mL of liquid acetone to a 100. mL…

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Q: The freezing point of a liquid will change when a solute is added. Explain how the addition of salt…

A: Using the formula:Δ" data-mce-style="display: inline-block; line-height: 0; text-indent:…

Q: Using the above solubility curve, predict the solubility of sulfanilamide in 95% ethyl alcohol at 0…

A: The solubility of a substance is the maximum concentration of that substance that can…

Q: 3. Which of the following statement/s is/are correct? 1. 3.00 N H2SO4 is equivalent to 6.00M H2SO4.…

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Q: A 4 x 10^-6 % solution if sodium-24 chloride is prepared at 9:00 am on Tuesday. What is the percent…

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Q: How many mL of sodium hydroxide (NaOH) are there in 435 mL of a 6.40% (v/v) solution of NaOH?

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Q: Calculate the final concentration (in mol/L) of an aqueous solution after 982.55mL of 0.56M NaCl has…

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Q: Question 1 ( S b Which material has the greatest solubility in hexane (C6H14) at the same…

A: Given : molecules  Tip: like dissolve like.

Q: How would you make 550 mL of 1:30 boric acid solution from 75% stock

A: The question is based on the concepts of solutions. we need to prepare the desired solution from the…

Q: Calculate the grams of NaOH present in 1.0 mL of a 2.0\%(m/v)NaOH solution.

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Q: For the ppm of K2Cr2O7 why did you multiply by 10^6?   What is the 10^6 suppose to represent or…

A: ppm is a special concentration unit which is used only when solute is present in negligible or trace…

Q: Assuming no systematic errors, within what range are you 90% certain that the true mean value of the…

A: The given molarities of NaOH solution are, 0.4028, 0.4029 , 0.4023 , 0.4031 , 0.4026 , 0.4027 ,…

Q: I was given a task to formulate 80mg/15ml (473ml) of Theophylline suspension. But i dont know the…

A: Given, Volume of Theophylline = 473mL Density=80mg/15mL

Q: Calculate the following: The number of milliliters of alcohol in 500 mL of a 20.0% (v/v) solution.

A: Given, Calculate the following: The number of millilitres of alcohol in 500 mL of a 20.0% (v/v)…

Q: Which of the following will show a Tyndall Effect? Select the correct response: Aqueous solution of…

A: Tyndall effect is an optical property of a colloidal solution. When a beam of light passed through a…

Q: For a solution containing 0.050 M sodium butanoate (the sodium salt of butanoic acid, butanoic acid…

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Q: How much mL of Acetone is needed to make 100mL of an aqueous 30% (v/v) Acetone solution? How much mL…

A: Given,  Volume of the solution = 100 mL  Volume percent of acetone = 30% How much mL of Acetone is…

Q: how to make a stock solution of 10% ethanol and 40% water? do the necessary volume to concentration…

A: To make a stock solution of 10% ethanol and 40% water.

Q: 8. How many grams of CaCl, will be dissolved in 50g of water at 70°C2 9. What amount of water is…

A: We need to check solubility value at particular temperature from graph.

Q: Which solution is most likely isotonic?

A: We would first define isotonic solution , then we would find which solution is isotonic .

Q: Rx: Phenylephrine hydrochloride 0.85% w/v Sodium chloride qs Purified water qs 90 mL Make isotonic…

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Q: At what temperature will 40g NaCl dissolve in 100g water?

A: Using the solubility curve of NaCl with temperature, for 40g of NaCl to be dissolved  in 100g of…

Q: Calculate the mole fraction of Kl in a solution made by dissolving 3.4 g of Kl in 5.8 g of water.

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Q: 1) What is the molarity of a 1.44 (m/v)% solution of HCOOH (formic acid)?

A: The m/v concentration of the HCOOH solution is = 1.44 % The molarity of the solution is =? We know…

Q: 1. If 30.0 mL of 1.0 M CH3COOH and 5.0 mL of 1.0 M NaOH are mixed in a beaker, what is the change in…

A: Volume of CH3COOH = 30.0 mL Concentration of CH3COOH = 1.0 M Volume of NaOH = 5.0 mL Concentration…